A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5945-01-322-7112
NSN 5960-01-023-8037
NSN 5998-01-012-5865
NSN 6105-01-426-7906
NSN 4140-00-486-6292
NSN 6105-01-443-2980
NSN 5960-00-922-7941
NSN 6150-01-347-3337
NSN 6610-01-645-1816
NSN 5920-00-072-1492
NSN 6650-00-930-8825
NSN 5925-01-107-1951